It's basically doing a diamond pushup, but doing it on the medicine ball makes your stabilizer muscles kick in that much more. Just like using a swiss ball instead of a bench for lifts.My medicine ball is the hard rubber one, a little smaller than a basketball, but the rubber is thicker to add weight.

It also helps me because my left wrist does not like the pushup position and on the med ball I can change the angle so it doesn't hurt.

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We should all take ourselves seriously...and then crumple that image up and toss it out the window.